CN111405574A - A broadband wireless communication method, apparatus, device and readable storage medium - Google Patents

Abstract

The invention discloses a broadband wireless communication method, a device, equipment and a computer readable storage medium; in the scheme, the shared frequency band needs to be divided into a plurality of sub-channels, when a sending end sends data, a target sub-channel for sending the data can be dynamically selected from the shared frequency band, and when a receiving end receives the data, the next frame of data is accurately received according to the type information of the sub-channel in the current frame of data, the frequency point information of the sub-channel and the working center frequency point information of the receiving end until all the data are received, so that the effective transmission of the data is realized, and the anti-interference capability of the data transmission is improved. The invention also discloses broadband wireless communication which can also realize the effects.

Description

A broadband wireless communication method, apparatus, device and readable storage medium

technical field

The present invention relates to the technical field of mobile communication systems, and more particularly, to a broadband wireless communication method, apparatus, device, and computer-readable storage medium.

Background technique

In recent years, both civil communication and military communication have put forward more and more requirements for the transmission capacity of the system, and the theory and technology of broadband wireless communication have made great progress. Among them, OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing Multiplexing technology), MIMO-OFDM (Multiple-Input Multiple-Output-OFDM, Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing) transmission system is its main transmission system. The present invention uses a broadband autonomous frequency selection system based on OFDM system. As an example to illustrate, the related method can be directly extended to the broadband autonomous frequency selection system of the MIMO-OFDM system. See Figure 1, which is a model diagram of an OFDM system. The data sent by the system is channel-coded, QAM (Quadrature Amplitude Modulation, Quadrature Amplitude Modulation) mapping, IFFT (Inverse Fast FourierTransform, fast algorithm for inverse discrete Fourier transform) and CP (Cyclic Prefix, cyclic prefix) and other processing to obtain an OFDM signal, and then transmit it through a wireless channel. The receiving end must first perform synchronization processing on the received signal, estimate and compensate for the symbol timing and carrier frequency deviation, so as to ensure that the subsequent QAM demapping, channel decoding and other processing are carried out correctly.

With the increase of a large number of electronic devices, the electromagnetic environment faced by the communication equipment is becoming more and more complex, and the available frequency bands have the characteristics of discontinuous distribution, uneven distribution and unstable duration. Adaptability in environments, especially broadband wireless communication systems. In particular, due to its wide occupied bandwidth itself, it is more susceptible to interference, and it is particularly urgent to improve its adaptability in complex electromagnetic environments. Therefore, how to improve the anti-interference capability of the wireless communication system is a problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a broadband wireless communication method, apparatus, device and computer-readable storage medium, so as to improve the anti-interference capability of the wireless communication system.

In order to achieve the above object, the present invention provides a broadband wireless communication method, the broadband wireless communication method is based on the transmitting end of the wireless communication system, and includes:

Set the waveform channel to several independent sub-channels, and determine the sub-channel bandwidth of the independent sub-channels;

dividing the shared frequency band into an integer number of sub-channels with the sub-channel bandwidth as a basic unit;

The target subchannel is dynamically selected from the shared frequency band, and the data is sent to the receiving end through the target subchannel, so that the receiving end can receive the next frame of data according to the control information of the current frame data received from the target subchannel, and realize the transmission. data communication between the receiving end and the receiving end; the control information includes: sub-channel type information, frequency information of the sub-channel and working center frequency information of the receiving end; the type information includes valid sub-channels and invalid sub-channels.

Wherein, each sub-channel adopts a separate control channel to transmit control information.

Wherein, the dynamic selection of the target sub-channel from the shared frequency band includes:

Valid subchannels and invalid subchannels are dynamically selected from the waveform channel bandwidth of the shared frequency band; the valid subchannels are used to transmit valid data, and the invalid subchannels are used to transmit invalid data.

Among them, this program also includes:

It is judged whether the frequency spectrum interval of the shared frequency band is larger than a predetermined threshold; if so, the data is sent in a multi-carrier aggregation mode, and if not, the data is sent in a direct aggregation mode.

Wherein, the dynamic selection of the target sub-channel from the shared frequency band includes:

An effective subchannel is dynamically selected from the waveform channel bandwidth of the shared frequency band, and an interfering subchannel is dynamically selected from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective subchannel is used to transmit effective data , the interference subchannel is used to transmit interference data.

In order to achieve the above object, the present invention further provides a broadband wireless communication device, the broadband wireless communication device is based on the transmitting end of the wireless communication system, and includes:

a sub-channel bandwidth determination module, used for setting the waveform channel as several independent sub-channels, and determining the sub-channel bandwidth of the independent sub-channels;

a sub-channel dividing module, configured to divide the shared frequency band into an integer number of sub-channels with the sub-channel bandwidth as a basic unit;

a sub-channel selection module for dynamically selecting a target sub-channel from the shared frequency band;

The data sending module is used to send data to the receiving end through the target subchannel, so that the receiving end receives the next frame of data according to the control information of the current frame data received from the target subchannel, and realizes the data communication between the sending end and the receiving end ; The control information includes: type information of the sub-channel, frequency information of the sub-channel and information of the working center frequency of the receiving end; the type information includes valid sub-channels and invalid sub-channels.

Wherein, the sub-channel selection module includes:

The first selection module is used for dynamically selecting valid sub-channels and invalid sub-channels from the waveform channel bandwidth of the shared frequency band; the valid sub-channels are used for transmitting valid data, and the invalid sub-channels are used for transmitting invalid data.

Wherein, the sub-channel selection module includes:

The second selection module is configured to dynamically select an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically select an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; The subchannels are used to transmit valid data, and the interfering subchannels are used to transmit interfering data.

To achieve the above object, the present invention further provides an electronic device, comprising:

The memory is used for storing a computer program; the processor is used for implementing the steps of the above-mentioned broadband wireless communication method when the computer program is executed.

To achieve the above object, the present invention further provides a computer-readable storage medium, where a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the above-mentioned broadband wireless communication method are implemented.

It can be seen from the above solutions that the embodiment of the present invention provides a broadband wireless communication method. The communication method is based on a transmitting end of a wireless communication system, and includes: setting a waveform channel as several independent sub-channels, and determining the sub-channel bandwidth of the independent sub-channels ; Divide the shared frequency band into an integer number of sub-channels with the sub-channel bandwidth as the basic unit; dynamically select the target sub-channel from the shared frequency band, and send the data to the receiving end through the target sub-channel, so that the receiving end can The control information of the current frame data received by the target subchannel receives the next frame of data, and realizes data communication between the transmitting end and the receiving end; the control information includes: the type information of the subchannel, the frequency point information of the subchannel, and the working center frequency of the receiving end. point information.

It can be seen that in this solution, the shared frequency band needs to be divided into multiple sub-channels. When sending data, the sender can dynamically select the target sub-channel for sending data from the shared frequency band. The type information of the sub-channel, the frequency information of the sub-channel and the working center frequency information of the receiver can accurately receive the next frame of data until all the data is received, thus realizing the effective transmission of data and improving the anti-interference ability of data transmission. . The present invention also discloses a broadband wireless communication device, equipment and computer-readable storage medium, which can also achieve the above effects.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a model diagram of an OFDM system disclosed in an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a broadband wireless communication method disclosed in an embodiment of the present invention;

3 is a schematic diagram of an OFDM waveform channel bandwidth sub-channel division model disclosed in an embodiment of the present invention;

4 is a schematic diagram of an independent control channel design model disclosed in an embodiment of the present invention;

5 is a schematic diagram of a sub-channel division model of a radio frequency front-end operating frequency band disclosed in an embodiment of the present invention;

6 is a schematic diagram of a link adaptive application model based on an autonomous frequency selection mechanism disclosed in an embodiment of the present invention;

7a is a schematic diagram of a transmitter of a broadband wireless autonomous frequency selection communication model based on an OFDM transmission system disclosed in an embodiment of the present invention;

7b is a schematic diagram of analog filtering of a broadband wireless autonomous frequency selection communication model based on an OFDM transmission system disclosed in an embodiment of the present invention;

7c is a schematic diagram of low-speed sampling of a broadband wireless autonomous frequency selection communication model based on an OFDM transmission system disclosed in an embodiment of the present invention;

7d is a schematic diagram of signal demodulation of a broadband wireless autonomous frequency selection communication model based on an OFDM transmission system disclosed in an embodiment of the present invention;

FIG. 8 is a broadband autonomous frequency selection receiving and transmitting end synchronization mechanism disclosed in an embodiment of the present invention;

FIG. 9 is a schematic diagram showing the representation of a frequency selection control word disclosed in an embodiment of the present invention

10 is a schematic diagram of an application model for interference avoidance based on an autonomous frequency selection mechanism disclosed in an embodiment of the present invention;

FIG. 11 is a block diagram of direct broadband aggregation at the transmitting end disclosed in an embodiment of the present invention;

FIG. 12 is a block diagram of multi-carrier aggregation at the transmitting end disclosed in an embodiment of the present invention

13 is an integrated application model of communication interference based on an autonomous frequency selection mechanism disclosed in an embodiment of the present invention;

14 is a schematic structural diagram of a broadband wireless communication device disclosed in an embodiment of the present invention;

FIG. 15 is a schematic diagram of an electronic device disclosed in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the current wireless communication system, spread spectrum technology is the most widely used and mature anti-jamming technology. Spread spectrum anti-jamming technology usually includes direct spread and frequency hopping. The principle of anti-jamming is to expand the signal in the frequency domain, reduce the signal power density, hide the target signal in the interference signal and noise, and improve the system. Adaptability to disturbances. However, for wireless broadband communication systems, due to the high occupied bandwidth and spectrum resources of the spread spectrum technology, and the current spectrum resources are limited, it is difficult to have enough bandwidth to provide frequency hopping and spread spectrum gain to meet the anti-interference requirements.

In addition, due to the fragmented distribution characteristics of interference in multiple domains such as time, space, and frequency, and such distribution characteristics are often not rapidly time-varying (non-adversarial environment). The autonomous frequency selection communication technology introduces the idea of opportunistic spectrum access. It regards the sub-bands with no interference or the interference power below the threshold value in the working frequency band of the system as "spectrum holes". interact. The receiver notifies the sender to dynamically adjust the operating frequency or other communication parameters according to the noise changes in the local "spectrum hole", so as to meet the receiving performance requirements, minimize the impact of interference on the system performance, and greatly improve the system's resistance. Interference ability. Therefore, autonomous frequency selection is an important means to improve the anti-interference capability of broadband wireless communication equipment.

Embodiments of the present invention disclose a broadband wireless communication method, apparatus, device, and computer-readable storage medium, so as to improve the reliable transmission capability of the wireless communication system.

Referring to FIG. 2, an embodiment of the present invention provides a broadband wireless communication method. The communication method is based on a transmitter of a wireless communication system, including:

S101. Set the waveform channel as several independent sub-channels, and determine the sub-channel bandwidth of the independent sub-channels;

It should be noted that the broadband wireless communication method described in this embodiment can be applied to broadband wireless communication systems such as OFDM or MIMO-OFDM, and only the broadband autonomous frequency selection system of the OFDM system is used as an example for description.

，OFDM体制采用

个子载波，在此基础上，将信道带宽划分为

个独立的子信道，则每个信道占用

个子载波，且

，子信道带宽为

。具体来说，本申请中的每个子信道之间相互独立，也即：每个子信道采用单独控制信道传输控制信息。参见图4，为本发明实施例公开的独立控制信道设计模型示意图，通过该图可以看出，每个子信道在传输数据段时都会通过该子信道传输控制段，该控制段中记载了控制信息，且不同子信道之间传输的控制段是通过单独的子信道传输的，可以看出，该方式灵活方便，便于实现且具有很好的后向兼容性，但是控制开销跟载波聚合的基本载波成正比。Before communication in the present application, the waveform channel needs to be set as several independent sub-channels, and the sub-channel bandwidth of the independent sub-channels is determined. Referring to FIG. 3, it is a schematic diagram of a sub-channel division model of an OFDM waveform channel bandwidth disclosed in an embodiment of the present invention; as shown in FIG. 3, the waveform channel bandwidth of the broadband autonomous frequency selection system of the OFDM system is

, the OFDM system adopts

On this basis, the channel bandwidth is divided into

independent sub-channels, then each channel occupies

subcarriers, and

, the subchannel bandwidth is

. Specifically, each sub-channel in this application is independent of each other, that is, each sub-channel uses an independent control channel to transmit control information. Referring to FIG. 4 , which is a schematic diagram of an independent control channel design model disclosed by an embodiment of the present invention, it can be seen from the figure that each subchannel transmits a control segment through the subchannel when transmitting a data segment, and the control information is recorded in the control segment , and the control segment transmitted between different subchannels is transmitted through a separate subchannel. It can be seen that this method is flexible, convenient, easy to implement, and has good backward compatibility, but the control overhead is the same as the basic carrier of carrier aggregation. proportional.

S102. Divide the shared frequency band into an integer number of sub-channels with the sub-channel bandwidth as the basic unit;

，最低工作频率为

，最高工作频率为

，这意味着通过配置合适的工作中心频率和模拟滤波器带宽等参数，射频前端工作频率范围内的信号都可以正常接收或者发射。因此在本申请中，以OFDM体制波形的子信道带宽为基本单元，将射频前端带宽划分为

个子信道，将子信道编号为

，假设射频前端的中心工作频点为

，则第m个子信道的中心频点为

。其中，各个参数获取方法如下所示：Specifically, after the sub-channel bandwidth is determined, the shared frequency band needs to be divided into an integer number of sub-channels with the sub-channel bandwidth as a basic unit. Referring to FIG. 5 , it is a schematic diagram of the sub-channel division model of the working frequency band of the radio frequency front end disclosed in the embodiment of the present invention. If the shared frequency band bandwidth of the radio frequency front end of the hardware platform (communication device) is

, the minimum operating frequency is

, the maximum operating frequency is

, which means that by configuring parameters such as the appropriate working center frequency and analog filter bandwidth, signals within the working frequency range of the RF front-end can be received or transmitted normally. Therefore, in this application, the sub-channel bandwidth of the OFDM system waveform is used as the basic unit, and the RF front-end bandwidth is divided into

subchannels, number the subchannels as

, assuming that the center operating frequency of the RF front end is

, then the center frequency of the mth subchannel is

. Among them, each parameter acquisition method is as follows:

；Number of shared frequency sub-channels:

;

；The working center frequency of the sender:

;

；Subchannel number:

;

。The center frequency of the mth subchannel:

.

S103. Dynamically select the target subchannel from the shared frequency band, and send the data to the receiving end through the target subchannel, so that the receiving end can receive the next frame of data according to the control information of the current frame data received from the target subchannel, so that the sending end can communicate with Data communication at the receiving end; the control information includes: sub-channel type information, sub-channel frequency information and working center frequency information of the receiving end; the type information includes valid sub-channels and invalid sub-channels.

It should be noted that when the RF front-end working frequency band (shared frequency band) is fixed and only the OFDM system waveform channel bandwidth is available (the case of fixed spectrum division), when transmitting data, the target sub-channel can be dynamically selected from the shared frequency band for data transmission. . For example, referring to FIG. 6 , it is a schematic diagram of a link adaptation application model based on an autonomous frequency selection mechanism disclosed in an embodiment of the present invention. The traditional link adaptation model dynamically selects Modulation and Coding Scheme (MCS) with different transmission efficiencies and performances according to time-varying channel conditions. Its main research content is to optimize the MCS switching threshold to obtain the maximum throughput. Different from the traditional link adaptation model, this model not only dynamically selects MCS with different transmission efficiency and performance according to the time-varying channel and interference conditions, but also dynamically selects the number of sub-channels and the distribution of sub-channels to obtain the maximum throughput .

Therefore, in this application, the broadband OFDM waveform channel is designed as several independent sub-channels, and the shared frequency band is divided into an integer number of sub-channel bandwidths with the broadband OFDM waveform sub-channel bandwidth as the basic unit. The "time-frequency hole" of the interference-to-noise ratio threshold sends valid information, that is, the present application dynamically selects the target sub-channel from the time-frequency hole of the shared frequency band. 7a, 7b, 7c, and 7d are schematic diagrams of the broadband wireless autonomous frequency selection communication model based on the OFDM transmission system disclosed in the embodiment of the present invention; it can be seen that FIG. 7a first determines the effective communication bandwidth from the shared bandwidth, and the effective The communication bandwidth is the channel bandwidth of the OFDM waveform, and then Figure 7b determines the target sub-channel for data transmission from the effective communication bandwidth for data transmission. The target sub-channel is the front-end analog filtering bandwidth, and the working center frequency is indicated, Figure 7c and Figure 7 7d is a self-service frequency selection system with complexity that can be realized through low-speed sampling, which realizes reliable data transmission.

It can be understood that the core problem of the broadband autonomous frequency selection communication system is to realize the synchronization of the transmitting end and the receiving end. The center frequencies of the transmitting end and the receiving end are no longer consistent, so in this application, the synchronization mechanism of the receiving end and the transmitting end shown in FIG. 8 is provided. In the initial stage of the mechanism, the receiver uses the default initial frequency to work, the transmitter periodically sends synchronization frames, and the working frequency of the receiver of the synchronization frame is the default value. In the cyclic phase of communication, the frequency selection control word in the control information of the previous frame of data provides frequency information such as the central working frequency of the receiver of the next frame.

比特信息进行表示。三是接收端的工作中心频点信息，该部分也可以利用子信道的编号来表示，需要

比特信息来表示。因此接收端在接收数据时，可根据控制信息了解进行数据传输时动态选择的子信道、子信道分布，并通过选择工作的中心频率，结合宽带OFDM波形信道带宽的模拟滤波滤除带外干扰，防止干扰阻塞，在此基础上，本申请还以低速采样构造低实现复杂度的自主选频系统，确保信息在有效子信道上实现高可靠性、自适应速率传输。Referring to FIG. 9, it is a schematic diagram of the characterization of the frequency selection control word disclosed by the embodiment of the present invention; it can be seen from this figure that the frequency selection control word in the control information contains three parts of information, one is the type information of the OFDM waveform sub-channel, that is The valid sub-channel (communication sub-channel) or the invalid sub-channel (interference sub-channel), this part of the information needs N bits to characterize, the second is the frequency point information or frequency distribution of the sub-channel, this part of the information uses the sub-channel number and The central working frequency of the transmitter (the central working frequency of the transmitter is the default value) is indicated. Therefore, it is necessary to

bit information. The third is the working center frequency information of the receiving end. This part can also be represented by the number of the sub-channel.

bit information. Therefore, when receiving data, the receiving end can know the sub-channel and sub-channel distribution dynamically selected during data transmission according to the control information, and filter out out-of-band interference by selecting the center frequency of the operation, combined with the analog filtering of the broadband OFDM waveform channel bandwidth, To prevent interference blocking, on this basis, the present application also constructs an autonomous frequency selection system with low implementation complexity with low-speed sampling to ensure high reliability and adaptive rate transmission of information on effective sub-channels.

In this embodiment, dynamically selecting a target subchannel from the shared frequency band includes:

Dynamically select valid subchannels and invalid subchannels from the waveform channel bandwidth of the shared frequency band; the valid subchannels are used to transmit valid data, and the invalid subchannels are used to transmit invalid data;

Alternatively, an effective subchannel is dynamically selected from the waveform channel bandwidth of the shared frequency band, and an interference subchannel is dynamically selected from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective subchannel is used for transmission Effective data, the interfering subchannel is used for transmitting interfering data.

The solution further includes: judging whether the frequency spectrum interval of the shared frequency band is larger than a predetermined threshold; if so, sending data in a multi-carrier aggregation mode, and if not, using a direct aggregation mode to send data.

和接收端中心工作频点

不再相同，而是接收端根据时变的信道和干扰条件动态选择中心频点

来实现干扰规避，其中通过模拟滤波来实现带外干扰抑制，防止阻塞。It should be noted that when the working frequency band of the radio frequency front end is wider and much larger than the OFDM system waveform channel bandwidth, referring to FIG. 10 , an embodiment of the present invention discloses a schematic diagram of an interference avoidance application model based on an autonomous frequency selection mechanism. In this model, the RF front-end operating frequency band can be regarded as a shared frequency band. For example, when a communication device operates in the ISM (Industrial Scientific Medical Band) frequency band, the intensity and spectral distribution of interference in this frequency band will change according to time. Among them, in the interference avoidance application model shown in Figure 10, according to the size of the shared spectrum interval, the sender adopts different broadband aggregation methods. When the shared spectrum interval is small, the sender can use the direct aggregation method shown in Figure 11. , when the shared spectrum interval is relatively large, if the direct aggregation method shown in Figure 11 is used again, it will put forward high requirements on the sampling rate of the DA chip. In order to solve this problem, when the shared spectrum interval is large, the transmitting end adopts the multi-carrier aggregation method as shown in FIG. 12 . In the interference avoidance application model shown in Figure 10, the center operating frequency of the transmitter

and the center working frequency of the receiver

It is no longer the same, but the receiver dynamically selects the center frequency according to the time-varying channel and interference conditions

To achieve interference avoidance, out-of-band interference suppression is achieved through analog filtering to prevent blocking.

和接收端中心工作频点

不再相同，而是接收端根据时变的信道和干扰条件动态选择中心频点

来实现干扰规避，其中通过模拟滤波来实现带外干扰抑制，防止阻塞。另一方面，与图10所示的干扰规避应用模型不同，无效子信道不再与有效子信道聚合在一起，而是根据敌方的通信频点分布动态选择无效子信道的频点，从而使无效子信道成为干扰子信道。Further, when the working frequency band of the RF front-end is wider, which is much larger than the waveform channel bandwidth of the OFDM system, Figure 13 shows an integrated application model of communication interference based on the autonomous frequency selection mechanism. For example, a military tactical radio station working in the UHF frequency band not only needs to avoid the enemy's interference, but also needs to interfere with the normal communication of the enemy's radio station if possible to improve combat effectiveness. In this case, the central working frequency of the transmitter

and the center working frequency of the receiver

It is no longer the same, but the receiver dynamically selects the center frequency according to the time-varying channel and interference conditions

To achieve interference avoidance, out-of-band interference suppression is achieved through analog filtering to prevent blocking. On the other hand, unlike the interference avoidance application model shown in Figure 10, the invalid subchannels are no longer aggregated with the valid subchannels, but the frequency points of the invalid subchannels are dynamically selected according to the communication frequency distribution of the enemy, so that the Inactive subchannels become interfering subchannels.

From the above, it can be seen that this scheme proposes an autonomous frequency selection method suitable for broadband wireless communication systems. This method designs the broadband OFDM waveform channel into several independent sub-channels, and at the same time divides the shared frequency band into the broadband OFDM waveform sub-channel bandwidth. Divide the basic unit into an integer number of sub-channel bandwidths, and dynamically select the "time-frequency hole" that exceeds a certain signal-to-interference-noise ratio threshold at the transmitter according to channel and interference conditions to send valid information. The analog filtering of channel bandwidth filters out out-of-band interference and prevents interference blocking. On this basis, an autonomous frequency selection system with low implementation complexity is constructed with low-speed sampling to ensure high reliability and adaptive rate transmission of information on effective sub-channels. .

The following describes the communication apparatus provided by the embodiments of the present invention, and the communication apparatus described below and the communication method described above may refer to each other.

Referring to FIG. 14, an embodiment of the present invention provides a broadband wireless communication device. The broadband wireless communication device is based on a transmitter of a wireless communication system, including:

a sub-channel bandwidth determination module 100, configured to set the waveform channel into several independent sub-channels, and determine the sub-channel bandwidth of the independent sub-channels;

a sub-channel dividing module 200, configured to divide the shared frequency band into an integer number of sub-channels with the sub-channel bandwidth as a basic unit;

a sub-channel selection module 300, configured to dynamically select a target sub-channel from the shared frequency band;

The data sending module 400 is used for sending data to the receiving end through the target subchannel, so that the receiving end receives the next frame of data according to the control information of the current frame data received from the target subchannel, and realizes the data of the sending end and the receiving end communication; the control information includes: type information of the subchannel, frequency point information of the subchannel, and information of the working center frequency point of the receiving end; the type information includes valid subchannels and invalid subchannels.

Wherein, each sub-channel adopts a separate control channel to transmit control information.

Wherein, the sub-channel selection module includes:

The first selection module is used for dynamically selecting valid sub-channels and invalid sub-channels from the waveform channel bandwidth of the shared frequency band; the valid sub-channels are used for transmitting valid data, and the invalid sub-channels are used for transmitting invalid data.

Among them, this program also includes:

a judging module for judging whether the frequency spectrum interval of the shared frequency band is greater than a predetermined threshold;

The data sending module is specifically configured to: when the frequency spectrum interval of the shared frequency band is greater than a predetermined threshold, send data in a multi-carrier aggregation mode, otherwise, send data in a direct aggregation mode.

Wherein, the sub-channel selection module includes:

The second selection module is configured to dynamically select an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically select an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; The subchannels are used to transmit valid data, and the interfering subchannels are used to transmit interfering data.

Referring to FIG. 15, an electronic device disclosed in an embodiment of the present invention includes:

memory for storing computer programs;

The processor is configured to implement the steps of the broadband wireless communication method described in the above method embodiments when executing the computer program.

In this embodiment, the device may be a PC (Personal Computer, personal computer), or may be a terminal device such as a smart phone, a tablet computer, a palmtop computer, and a portable computer.

The device may include a memory 11 , a processor 12 and a bus 13 .

The memory 11 includes at least one type of readable storage medium, including flash memory, hard disk, multimedia card, card-type memory (eg, SD or DX memory, etc.), magnetic memory, magnetic disk, optical disk, and the like. The memory 11 may in some embodiments be an internal storage unit of the device, such as a hard disk of the device. The memory 11 may also be an external storage device of the device in other embodiments, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a Secure Digital (SD) card, a flash memory card ( Flash Card), etc. Further, the memory 11 may also include both an internal storage unit of the device and an external storage device. The memory 11 can be used not only to store application software installed in the device and various types of data, such as program codes for executing communication methods, etc., but also to temporarily store data that has been output or will be output.

In some embodiments, the processor 12 may be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor or other data processing chip for executing program codes or processing stored in the memory 11 Data, such as program code that executes a communication method, etc.

The bus 13 may be a peripheral component interconnect (PCI for short) bus or an extended industry standard architecture (Extended industry standard architecture, EISA for short) bus or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is shown in FIG. 15, but it does not mean that there is only one bus or one type of bus.

Further, the device may also include a network interface 14, and the network interface 14 may optionally include a wired interface and/or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is usually used between the device and other electronic devices Establish a communication connection.

Optionally, the device may further include a user interface 15, the user interface 15 may include a display (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 15 may also include a standard wired interface and a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode, organic light-emitting diode) touch device, and the like. Among them, the display may also be appropriately referred to as a display screen or a display unit, for displaying information processed in the device and for displaying a visual user interface.

FIG. 15 only shows the device with components 11-14. Those skilled in the art can understand that the structure shown in FIG. 15 does not constitute a limitation on the device, and may include fewer or more components than those shown. Either some components are combined, or different component arrangements.

Embodiments of the present invention further disclose a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the broadband wireless communication method described in the foregoing method embodiment is implemented. step.

Wherein, the storage medium may include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various storage media that can store program codes medium.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A broadband wireless communication method, based on a transmitting end of a wireless communication system, includes:

setting the waveform channel into a plurality of independent sub-channels, and determining sub-channel bandwidths of the independent sub-channels;

dividing the shared frequency band into integer sub-channels by taking the sub-channel bandwidth as a basic unit;

dynamically selecting a target sub-channel from the shared frequency band, and transmitting data to a receiving end through the target sub-channel so that the receiving end receives next frame data according to control information of current frame data received from the target sub-channel, thereby realizing data communication between the transmitting end and the receiving end; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.

2. The method of claim 1, wherein each sub-channel uses a separate control channel for transmitting control information.

3. The method of claim 1, wherein the dynamically selecting the target sub-channel from the shared frequency band comprises:

dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.

4. The broadband wireless communication method according to claim 3, further comprising:

judging whether the frequency spectrum interval of the shared frequency band is larger than a preset threshold value or not; if yes, sending data by adopting a multi-carrier aggregation mode, and if not, sending data by adopting a direct aggregation mode.

5. The method of claim 1, wherein the dynamically selecting the target sub-channel from the shared frequency band comprises:

dynamically selecting an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically selecting an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.

6. A broadband wireless communication apparatus, based on a transmitting end of a wireless communication system, comprising:

the subchannel broadband determination module is used for setting the waveform channel into a plurality of independent subchannels and determining the subchannel bandwidth of the independent subchannels;

a sub-channel dividing module, configured to divide the shared frequency band into integer sub-channels by using the sub-channel bandwidth as a basic unit;

a sub-channel selection module, configured to dynamically select a target sub-channel from the shared frequency band;

the data transmission module is used for transmitting data to a receiving end through a target sub-channel so that the receiving end receives next frame data according to the control information of the current frame data received from the target sub-channel, and data communication between the transmitting end and the receiving end is realized; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.

7. The broadband wireless communication apparatus of claim 6, wherein the sub-channel selection module comprises:

the first selection module is used for dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.

8. The broadband wireless communication apparatus of claim 6, wherein the sub-channel selection module comprises:

a second selection module, configured to dynamically select an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically select an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.

9. An electronic device, comprising:

a memory for storing a computer program;

a processor for implementing the steps of the broadband wireless communication method according to any one of claims 1 to 5 when executing the computer program.

10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the broadband wireless communication method according to any one of claims 1 to 5.

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